CN208476319U - A kind of anti-blocking self-clean type flowmeter - Google Patents

Abstract

The utility model relates to fluid flow rate measurement apparatus, especially anti-blocking self-clean type flowmeter.Aim to solve the problem that prior art device using the dirty fluid such as middle coal gas the problem of causing flow meter from being blocked to fail.The utility model includes a pair of of positioning flange, detection piece is installed between flange, this detection piece includes the clapboard with semilune free air space, the wedge shape plate surface is coated with Teflon anti-stick coating, its cross sectional dimensions is in that gradient shape is tapered, and the gradient is between 1:2-1:2000 from top to bottom.Advantage is: can, gas or liquid working that adhesiveness strong dirty in medium under the conditions of, realization works reliably and with long-term.

Description

A kind of anti-blocking self-clean type flowmeter

Technical field

The utility model relates to measurement of fluid flow apparatus field, especially a kind of anti-blocking self-clean type flowmeter.It is applicable in In various fluids including liquid, gas, the flow measurement of for example various coal gas of especially impure gas is a kind of novel Differential pressure flowmeter.

Background technique

In industrial production at this stage, existing flow instrument can substantially be competent at the flow measurement of clean fluid, but It is for dirty adhesiveness fluid, there are no relatively satisfactory flow instruments.There is a kind of V-Bar Flowmeter at present, is able to solve one Divide the flow measurement of dirty fluid, but if fluid contains adhesiveness impurity, such as tar in coal gas, naphthalene, with temperature Reduction adhesiveness be remarkably reinforced, wedge surface can be adhered to, medium smooth outflow is influenced and influence measurement accuracy, even lose Effect.So far there are no a kind of flowmeters can preferably solve the problems, such as this.

Summary of the invention

The purpose of this utility model is exactly to solve the problems, such as that flowmeter is easy to be blocked in the prior art.

The concrete scheme of the utility model is:

A kind of anti-blocking self-clean type flowmeter is designed, is mounted on measured pipeline, including a pair of of positioning flange, in method Your beautiful writings is equipped with detection piece, this detection piece includes the clapboard with semilune free air space, and the wedge shape plate surface is coated with Teflon anti-stick coating, cross sectional dimensions are in that gradient shape is tapered from top to bottom, and the gradient is between 1:2-1:2000.

In specific implementation, the clapboard is equipped with mounting hole with mounting plate constant temperature heat tape.

In specific implementation, pressure tappings are set on two side flanges of the clapboard, the quantity of two sides pressure tappings is 2-4, It is connected to through pressure pipe by manifold between the pressure tappings, not tally manifold collection is followed by pressure guiding pipe, and it is heavy to be connected in the bottom of the pressure guiding pipe Device drops.

In specific implementation, the coated effective constant temperature heat tape in the outer surface of pressure pipe, manifold and pressure guiding pipe.

The utility model has the beneficial effects that:

Can, gas or liquid working that adhesiveness strong dirty in medium under the conditions of, realization works reliably and with long-term；

The a little higher than medium temperature of temperature after energization, sticky contaminant viscosity become smaller, and are not easy to adhere to and influence in pressure pipeline The transmission of differential pressure signal, substantially increases reliability, solves the problems, such as the measurement of fluid flow containing sticky impurity.

Detailed description of the invention

Fig. 1 is the main view of the utility model structure；

Fig. 2 is the side-looking direction cross-sectional view of the utility model structure；

The names of the parts in figure: 1. anti-blowpipes；2. pressure tappings；3. pressure pipe；4. settler；5. effective constant temperature electric heating Band；6. pressure guiding pipe；7. manifold；8. flange；9. back blow port；10. clapboard；11. back-flushing valve；12. plate constant temperature heat tape.

Specific embodiment

It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.

Embodiment 1

A kind of anti-blocking self-clean type flowmeter is mounted on measured pipeline referring to Fig. 1 to Fig. 2, including a pair of of positioning is used Flange is equipped with detection piece between flange, this detection piece includes the clapboard 10 with semilune free air space, the clapboard 10 surfaces are coated with Teflon anti-stick coating, and cross sectional dimensions is in that gradient shape is tapered from top to bottom, and the gradient is in 1:2-1: Between 2000, wherein it is preferred that 1:40.

Pressure tappings 2 are arranged in the two sides of clapboard, and the quantity of two sides pressure tappings 2 is 2-4, through pressure pipe 3 between pressure tappings 2 It is connected to by manifold 7, two manifolds 7, which collect, is followed by pressure guiding pipe 6, is connected to settler 4 in the bottom of pressure guiding pipe.

Wedge shape is made into upper half block piece, and plate face spraying Teflon, plate are built into constant temperature heat tape 12, reduce The viscosity of medium, is conducive to bur by fluid impact and dissolves in fluid near plate face.

Clapboard 10 is equipped with mounting hole with mounting plate constant temperature heat tape 12.Pressure pipe 3, manifold 7 and pressure guiding pipe 6 The coated effective constant temperature heat tape 5 in outer surface.

The a little higher than medium temperature of temperature after energization, sticky contaminant viscosity become smaller, and are not easy to adhere to and influence in 3 tunnel of pressure pipe The transmission of differential pressure signal, substantially increases reliability, solves the problems, such as the measurement of fluid flow containing sticky impurity.

Between every two connected manifolds 7, the settler 4 of the other end installation periodic cleaning sediment of pressure guiding pipe 6.The design It can guarantee the unimpeded operation of equipment with periodic cleaning.Specifically, in order to guarantee the unimpeded of 6 tunnel of pressure guiding pipe, being needed in the course of work The impurity for entering pipeline is discharged inside pressure guiding pipe 6 in time, original technology is out of service rear artificial when blocking Cleaning just will receive the resistance of user if the frequency of blocking is higher than maintenance week inspection regulation.The utility model is at 6 end of pressure guiding pipe End adds a settler 4, in addition to impurity can be allowed along pipeline flowing into pipeline, can also be stored in settler 4, reduces completely A possibility that blocking.It generally is not required to additional maintenance except the normal service phase, thus the welcome by user.

On 8 face of flange for being provided with pressure tappings 2, it is equipped with back blow port 9, the reversed blowpipe 1 of 9 interpolation of back blow port welds, anti-blowpipe On be connected to back-flushing valve 11.In the course of work, it is periodically blown into solvent, can dissolve the bur on wedge, is kept wedge (throttling element) Without bur, shape invariance, efflux coefficient is constant, accuracy is also constant.

In specific work process, a pair of of flange 8 is accessed in the process pipeline that internal diameter is Ф 300, is clamped between two flanges 8 One piece of clapboard 10, the gradient on wedge two sides are 1:20, Ф 10 are bored among wedge, plate constant temperature is inserted into the hole of deep 100mm Heat tape 12.Between 8 screw hole of flange, from the inside holes drilled through-pressure tappings 2 in 8 periphery of flange, diameter Ф 14 is inserted into pressure pipe 3 welding.This pipeline category medium format, pressure tappings 2 set two pairs four, and the outlet end of pressure pipe 3 is connected to by manifold 7, two sections of discriminations Pipe 7, which collects, connects pressure guiding pipe 6, the latter and differential pressure transmitter (not showing in prior art, figure) connection.The connection of 6 bottom end of pressure guiding pipe Settler 4.In 8 face of flange for being provided with pressure tappings 2, a back blow port 9 is bored, diameter Ф 14, insertion anti-blowpipe 1 weld, Guan Shangjie There is back-flushing valve 11.Effective constant temperature heat tape 5 is tied up in pressure pipe 3, manifold 7 and 6 appearance bread of pressure guiding pipe.

When installation, a distance is cut open in process pipeline and is inserted into this flowmeter, 8 internal bore welding of flange is inserted into pipeline end face It connects, notices that medium flow direction meets the flow direction mark of flowmeter label.Pressure valve is welded in the outlet end of pressure guiding pipe 6, is not putting into operation Up till now valve was closed.Effective constant temperature heat tape 5 accesses alternating current by power switch, has throwing after items of equipment installation is appropriate Arc manipulation part.

Embodiment 2, the present embodiment principle is with embodiment 1, and specifically the difference is that, 10 two sides of clapboard are respectively provided with one Pressure tappings 2, corresponding, the end of single manifold 7 is provided with pressure guiding pipe 6 and expansion chamber.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (4)

1. a kind of anti-blocking self-clean type flowmeter, is mounted on measured pipeline, it is characterised in that: position usage including a pair Orchid is equipped with detection piece between flange, this detection piece includes the clapboard (10) with semilune free air space, the clapboard (10) surface is coated with Teflon anti-stick coating, and cross sectional dimensions is in that gradient shape is tapered from top to bottom, and the gradient is in 1:2- Between 1:2000.

2. anti-blocking self-clean type flowmeter as described in claim 1, it is characterised in that: the clapboard (10) is equipped with mounting hole With mounting plate with constant temperature heat tape (12).

3. anti-blocking self-clean type flowmeter as described in claim 1, it is characterised in that: be arranged on two side flanges of the clapboard Pressure tappings (2), the quantity of two sides pressure tappings (2) are 2-4, are connected through pressure pipe (3) by manifold (7) between the pressure tappings (2) Logical, two manifolds (7), which collect, is followed by pressure guiding pipe (6), is connected to settler (4) in the bottom of the pressure guiding pipe.

4. anti-blocking self-clean type flowmeter as claimed in claim 3, it is characterised in that: the pressure pipe (3), manifold (7) and draw The coated effective constant temperature heat tape (5) in the outer surface of pressure pipe (6).